//
//  SYUserAccount.swift
//  SYWeibo
//
//  Created by Eric on 16/7/22.
//  Copyright © 2016年 Eric. All rights reserved.
//

import UIKit

class SYUserAccount: NSObject,NSCoding{
    
    //用户授权的唯一票据
    var access_token: String?
    //access_token的生命周期 单位是秒数( vip 过期的时间是 5年 普通用3天)
    var expires_in: NSTimeInterval = 0 {
    //系统使用的kvc 对其身上的属性赋值的时候 会走 didset 的放方法
        didSet{

        //通过当前的日期+秒数 =  将要过期的日期
        expires_Date = NSDate(timeIntervalSinceNow: expires_in)
            
              print(expires_Date,expires_in)
            
        }
    }
    // 授权用户的UID
    var uid: String?
    // 用户昵称
    var screen_name: String?
    // 用户头像
    var avatar_large: String?
    // 过期日期
   var  expires_Date: NSDate?
    
    //KVC重载构造函数
    init(dict:[String: AnyObject]) {
        super.init()
        setValuesForKeysWithDictionary(dict)
    }
    
    override func setValue(value: AnyObject?, forUndefinedKey key: String) {
        
    }
    
    //重写父类有的属性decription
    override var description: String{
    let keys = ["access_token","expires_Date","uid","screen_name","avatar_large"]
    
        return dictionaryWithValuesForKeys(keys).description
    }
    
    //归档
    func encodeWithCoder(aCoder: NSCoder) {
        aCoder.encodeObject(access_token, forKey: "access_token")
        aCoder.encodeObject(expires_Date, forKey: "expires_Date")
        aCoder.encodeObject(uid, forKey: "uid")
        aCoder.encodeObject(screen_name, forKey: "screen_name")
        aCoder.encodeObject(avatar_large, forKey: "avatar_large")
        
        
    }
    
    //解档
    required init?(coder aDecoder: NSCoder) {
        access_token = aDecoder.decodeObjectForKey("access_token") as? String
        expires_Date = aDecoder.decodeObjectForKey("expires_Date") as? NSDate
        uid = aDecoder.decodeObjectForKey("uid") as? String
        screen_name = aDecoder.decodeObjectForKey("screen_name") as? String
        avatar_large = aDecoder.decodeObjectForKey("avatar_large") as? String
    }

}
